Not in any particular order.
1. The Shining
2. Silent hill
3. Silence of the lambs
4. 28 days later
5. Halloween (Original) Although I did really like Rob Zombies version.
6. Nightmare on elm street
7. The Omen
8. Alien
9. The Ring
10. The cabin in the woods

I agree... Trick r treat is a great movie! I'm a big fan of physco, It, halloween, hellraiser, nightmare on elm street 1, poltergeist, omen, and on and on........!!!! I really liked a movie not a lot of people have seen called "may", if you haven't seen it check it out. Not the best movie but the girl is creepy as hell!

I'm shocked that anyone liked Trick r Treat, it was horrible. It felt very low budget and the producers knew it was a failure because it kept getting pushed back more and more until they finally released it in limited theaters. The Sam guy looked cool but it was far from a great movie on the likes of all the others mentioned so far.